4 channels
Univarsal input card
AI834U is a low cost, high performance universal input card
AI834U uses a Modbus-RTU port for communicating with CPU and
master cards
AI834U provides excellent flexibility, low storage and installation costs.
The high reliability ensures a safe system operation and low
maintenance costs.
• Input
Current (0 .. 20 mADC)
Voltage (-20 .. 20 VDC / -400 .. +1100 mVDC)
Resistanc (0 .. 4420Ω / 0 .. 50KΩ)
Thermocuple (B,C,D,E,J,K,L,N,R,S,T,U)
RTD ( PT10,PT20,PT50,PT100,PT500,PT1000 α=38.5/39.16/39.20)
• Output
Modbus port for communicating with CPU or master cards
• Operating Temperature
-40°C to 85°C
• Galvanic isolation between input and output (I/O Isolation)
• Galvanic isolation between input channels (I/I Isolation)
• Built-in cold junction sensor for each channel separately
• Built-in terminal PT100 compensator as an option for each channel
• High precision ADC block (24 bits)
• High accuracy ADC block (16 bits)
• Zero Drift : ±2 µV/ºC or 10uΩ/°C or 0.05uA/°C
• Span Drift : ±10 ppm/ºC
• Digital low drift processing of measurement values
• Simultaneous conversion sequence of all channels
• Configurable high sampling rate (Max 100 Samples/s for each channel separately)
• Calibration of input channels through network using software
• Automated diagnostic for each channel
• Live card replacement
• 24 VDC power supply through local Modbus port
• Power consumption: 1.2W @ 24VDC
• I/O Connector Type: 4 pin plug-in terminal*4
PT100 embedded terminal is available for thermocouple
• Standard Models
AI834U: 4 univarsal input channels


Wiring Diagram